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Studies on Planting Suitability and Culture Techniques for Castor (Ricinus Communis L.) in Ningxia Irrigation Area

Author: YuRong
Tutor: DuanLiuSheng;LiMing
School: China Agricultural University
Course: Planting
Keywords: Ningxia Irrigation Area Castor oil plant Ecological Adaptability Cultivation techniques
CLC: S565.6
Type: Master's thesis
Year: 2005
Downloads: 118
Quote: 0
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Abstract


Specialty oil crops castor based on Ningxia Te ecological conditions , field experiment , observation determination and survey analysis the 18 imported castor varieties Ningxia irrigation area castor Plantability . Specific test results are as follows : 1 , Ningxia Guang geothermal resources sufficient irrigation area counties, cities 5 to Sept. ≥ 10 ℃ accumulated temperature within castor the accumulated temperature range suitable for the growth , Ningxia mountains and climate conditions meet castor cultivation . 2 , select associate degree in 0.7 above varieties suitable varieties for Ningxia irrigation , they are Jin grate 2 , Zi grate 2 Zi grate on the 5th , CSR190 , Zi grate 4 , Bryant No.3 . 3 , the yield of castor and castor spike type , pyramid spike yield is higher than the cylindrical spike and spindle-shaped spike . 4 , after the trial compared to early sowing than late sowing yield obvious coating than open field cultivation to increase production significantly . Suitable sowing time : 20 April , mid - April of plastic film mulching cultivation in open field cultivation . Seedling stage the ricin growth slow to enter the stage of rapid growth after flowering . In the irrigation area of Ningxia , the N and P ricin production has a significant effect on the medium fertility soil planting castor appropriate amount of nitrogen for the pure N 12kg/667m 2 applied phosphorus amount of the pure P 2 O 5 < / sub > 8kg/667 m 2 . 6 , high density is not conducive to good castor individual development , affect castor monoclonal economic traits , ultimately affecting the yield . Suitable castor plant density for 784 / 667m 2 . 7 , pruning to improve plant morphology , to inhibit plant apical dominance . Timely pruning to reduce nutrient consumption and promote normal mature ricin and increase production .

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CLC: > Agricultural Sciences > Crop > Economic crops > Oil crops > Castor
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